The function f is one-to-one. Find its inverse.f(x) = 
A. f-1(x) = 4x
B. f-1(x) = 
C. f-1(x) = -4x
D. f-1(x) = 
Answer: B
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Find the complete solution of the system.  figure 1.png)
a. (1,0,1) b. (5,0,1) c. (0,1,-1) d. (0,-2,2) e. none
Use the determinant feature of a graphing calculator to solve the system by Cramer's rule . (Round to one decimal place.)2.2x + 14.0y + 2.9z = 4.63.6x - 7.0y - 0.6z = -4.53.4x + 16.7y + 4.9z = 11.5
A. {(-1.4, -0.5, 4.9)} B. {(3.4, 1.2, -12.3)} C. {(-5.6, -1.9, 20.1)} D. {(-2.0, -0.7, 7.4)}
Solve the problem.The graph shows the median weight of girls between the ages of 0 and 24 months. 
Use the graph to find the average growth rate of a typical girl during the first year of her life. Give your answer in pounds per month.
A. 1.2 lb/month B. 0.8 lb/month C. 1.1 lb/month D. 1.8 lb/month
Find the LCM.9 and 15
A. 135 B. 45 C. 24 D. 15